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Thread: Circulation with spa and pool

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    Join Date
    May 2010
    Location
    Wilmington,NC
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    12

    Circulation with spa and pool

    I'm in the middle of renovating an IG pool/ spill over spa combination. My question is how do most people have the water recirculating. My thought was you open the suction on the pool valves. Close the returns on the pool. Return the water to the spa so that it spills over. If that is correct wouldn't the water in the spa have a much higher chlorine content than the pool? This pool will be using a SWG to chlorinate.

    Thanks
    DJ
    28,000gal inground 40x18free form concrete/plaster with spill over spa. 24in sand filter. 1.5hp haywood pump two speed.

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: Circulation with spa and pool

    Typically you only return a small portion of the water to the spa, with most of the return water going to the pool. Alternatively, you return water to the spa only a small portion of the total pump run time, with the water usually returning to the pool.

    If you use the setup as you described, the FC level will be higher in the spa, but not way way higher. The main problem with that setup is that you don't get very good circulation in the pool. The spa spillover doesn't usually get enough water movement in the pool to drive debris into the skimmer or to throughly mix shallow water with deeper water.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: Circulation with spa and pool

    What he said.

    I have maybe 20% of my return going to the spa. At one time I experimented with the valve settings so I would suck slightly less from the spa, but it just seemed too risky. If my skimmer got clogged, I could suck more than I was returning and end up running the pump dry. Too much going to the spa gets it churning and aerating which drives pH up. It's great when you want to lower TA, but it's not for every day.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

  4. Back To Top    #4

    Join Date
    May 2010
    Location
    Wilmington,NC
    Posts
    12

    Re: Circulation with spa and pool

    That makes more sense to me now. Thanks for the answers.

    DJ
    28,000gal inground 40x18free form concrete/plaster with spill over spa. 24in sand filter. 1.5hp haywood pump two speed.

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